Thermostatically-controlled heating system.



H. 0. MALLORY. THERMOS'IATIOALLY CONTROLLED HEATING SYSTEM.

APPLIOATION FILED JUNE'B, 1905.

Patented Apr. 4, 1911.

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ATTORNEY APPLICATION IILBD JUNEB, 1905.

Patented Apr. 4,1911.

2 SHEETS-SHEET 2.

INVENT OR O .QZ M A ATTORNEY WWESSES: M 2).

' To all mag concern:

" HARRY c. MALLORY, or New Yon'x, Y..

- TanninoswATmAL Y-conmoLnEn Immune system.

Be it known" thatI, HARRY a citizen of the United Statesof America,

inithe State-i New York, have invented a certain new and'useful Improvement in Thermostatically-.- Controlled Heating Sysrtems,of which the following is a true and exact description, reference being had to the accompanying drawings, which form apart thereof.

. invention relates to heating systems 1nwh1ch the admission of'steam to the ra';

' diator' through' a supply pipe is directly or indirectlyautomatically controlled by thermostaticmechanism and generally speaking my improved system is. particularly appli 'cable'to' those systems in which a pump or exhauster is used to remove the air or air and .water from the radiator through a return' p1pe and produce a partial vacuum therein so that the pressurein said pipe will be less than that in the steam supply pipe.

In carrying out my lnvention .I provide a conduit leading to or from the radiator with a'controlling valve and a' fluid pressure motor for actuating said valve, the motor chamber being provided withports bywhich it communicates both with the air and with the; low reduced pressure return pipe and I i provide a 'thermostatically actuated valve mechanism controlling said ports-to cause a variation of pressure inthe motor chamber and a consequent action of the motor to open or close the controlling valve.

One of the objects of my present ,inven 'tion is to provide such systems as above described with simultaneously actuated valves' which inthe act of opening one of the ports *leading to the motor chamber will close thev other ,port, thusavoiding any permanent ,leak to or from .the motor chamber and insurmg a prompt and efficient action of the motor. l l

The nature of'i'my invention will be best understood as described in connection with ment.

the drawings in which it is illustrated and in which- 1 j Figure 1, is an? elevation of one style of radiator system equlpped with my improve- Fig. 2, being a sectional elevation showing the-controllingvalve motor and thermostatic valve actuating apparatus, as

I indicated inFig. 1.- Fig, 3, is an elevation.- '55 showing the application of my improven'ient to another style of heating apparatus, and

' Specification 0fl 'iet te rs raamt.' Application filed June .8, 19,05." Seridl No. 264,204

C; Man Loni,

I tion' separating the lower part of PatentediAp-r 4, 1911';

i 4, a sectional'elevation of the 'controlling valve motor and thermostatically actuated valve system as shown in Fig. 3. residing n the city'and county of New York, the radiator supplied wi'th'steam at or near 'the top through a pipe A, in which I have In the constructionof Figs. 1 and 2, A, is

shown' a cut-oil val-veAi B, is the'outlet or -retur n pipeileadingfrom the bottom-of the radiator and connecting through a-valve casing-G, withthe low pressureipipe B,

-(1 being a 1 valveport through which the valve chamber connects with the return pipe B. Cflisthec'ontrolling valve attachedto and actuated through a stem-C which-isat tached at its top to theficiiible diaphragm D'f, of a fluid'pressuremotorof which the screw cap D, forms "the motor-chamber, in-- dicated at:D., 'E, iS' a-conduit'lea'ding, from. the motor chamber to the valve chamberv E, which is formed'in thetop of the tubular member I, of the thermostatic device to be described. G, is an adjustable threaded plug screwing into the head of thetubular memher I, and formed with a longitudinal perforation or port G' the end Q of the plug forming a valve seat. H, is a portedpartithe chamber F,'from. the lower part of the tube I, the upper surface of which forms a valve seat. J, 1s a rod hav-. bottom portion J ',---whic h bottom oi the' ing a threaded screws into the plug at the tube I g the upper end of the rodextinds into the valve chamber F, and has attac ed to it the valve disk K', the upper surface of which constitutesthe valve which o crates in con nection with the port G,an the lower sur--- face of which constltutesvthe valve which operates. in connection'with the ported parconduit connecting with the tubeI, and with the low pressure pipe B, as shown.

.In the system indicated, control of temperature is efi'ected' accumulation'of water in the radiator A,'1n accordance with .Patent 802,766, granted October 24th, 1-905, on an application filed September 20, 1902, the opening of the contition H. L, isa

trol 'valv e permitting the escapeof the accumulated water in the radiator while the closing of the control valve causes a gradual rise in the level of the condensed water and consequent diminution of the steam space in the radiator. Y

The tube 1, and rod J, made up of course of materials having diflerent thermal coefficients of expansion constitute the thatby the'regulation of the.

' and the controlling valve C so as to close A The outlet pipe B, 3

'indicates the valve'port in the chamber, C",

mostatic mechanism by means of which the being diaphragm up and the valve C ,'aWay from valve K,, on an increase of temperature is drawn down to close the ported partition H, and on a diminution of temperature thrust up to close the air port G An increase of temperature suflicient to close the ported partition H, cuts off the communication between the low pressure pipe and the motor chamber, and -by opening the air port G", permits the inflow of air at atmospheric pressure into the motor chamber with the result of pressing do*-*n the diaphragm D the connection between the radiator and the low pressure pipe. On tn'e other hand a K, -opening the connection'with the low pressure pipe and closing the air port G as a result of which the air is exhausted from the motor chamber and the flexible diaphragm and controlling valve 'moved up permitting an outflow of the water in the radiator to the return pipe. In the construction of Figs. 3 and :t, the radiator A, has a steam supply pipe A, situated at its bottom and connected through the valve chamber (1*, with the steam pipe communicates through a valve chamber M, with the low pressure pipe, B. In this construction C and (Ty-the controlling valve attached to avalve stem 0 which passes through a stuffing-box in the top of the valve chamber into the, motor chamber D, of a fluid pressure motor indicated at'D the valve stem engaging .a flexible diaphragm D forming the top of the motor chamber and held'in place by the flanged clamping cap D D", 1

a spring which normally holds the its seat. In this construction the motor chamber is connected by a pipe E, with a valve chamber of a thermostatic device practically identical with that shown and described in connection with Fig. 2. In this construction the top of the diaphragm is alwaysexposed to atmospheric pressure while the motor chamber is alternately connected with the atmosphere and with a low pressure return pipe to the valve chamber K, the con troller valve remaining lifted from its seat so long as atmospheric pressure is admitted to the motor chamber and being forced down to its seat when the pipe E,is connected with the reduced pressure return pipe.

Having now described my invention, what I claim as new and desire. to secure by Let ters Patent is,

In a two pipe low pressure heating system, the combination with a radiator and the'steam supply pipe and the separate low pressure return pipe connected to the radiator, a valve controlling the fiow of heating fluid through the radiator, a fluid pressure motor operating said valve, said motor having connections to the motor chamber thereof. including a port through which the chamber may be operated to the atmosphere and a second port through which the port may be connected to said low pressure pipe,

and a thermostatic valve mechanism controlling said ports and adapted to open either of said ports, while. at substantially the same time to close the otherof said ports.

7 v HARRY CVMALLORY. IVitnesses:

AnxoLo KATZ, D. STEWART.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

